1 cananian 1.1.2.1 // THROW.java, created Sat Aug 8 11:10:56 1998 by cananian
2 cananian 1.1.2.1 // Copyright (C) 1998 C. Scott Ananian <cananian@alumni.princeton.edu>
3 cananian 1.1.2.1 // Licensed under the terms of the GNU GPL; see COPYING for details.
4 cananian 1.1.2.1 package harpoon.IR.Quads;
5 cananian 1.1.2.1
6 cananian 1.1.2.7 import harpoon.ClassFile.HCodeElement;
7 cananian 1.1.2.1 import harpoon.Temp.Temp;
8 cananian 1.1.2.1 import harpoon.Temp.TempMap;
9 cananian 1.1.2.2 import harpoon.Util.Util;
10 cananian 1.1.2.2
11 cananian 1.1.2.1 /**
12 cananian 1.1.2.5 * <code>THROW</code> represents a <Code>throw</code> statement.
13 cananian 1.1.2.1 *
14 cananian 1.1.2.1 * @author C. Scott Ananian <cananian@alumni.princeton.edu>
15 cananian 1.5 * @version $Id: THROW.java,v 1.5 2002/04/11 04:00:35 cananian Exp $
16 cananian 1.1.2.1 */
17 cananian 1.1.2.1 public class THROW extends Quad {
18 cananian 1.1.2.1 /* The exception object to throw. */
19 cananian 1.1.2.2 protected Temp throwable;
20 cananian 1.1.2.1
21 cananian 1.1.2.2 /** Creates a <code>THROW</code> representing a exception
22 cananian 1.1.2.2 * throw statement.
23 cananian 1.1.2.2 * @param throwable
24 cananian 1.1.2.2 * the <code>Temp</code> containing the exception object
25 cananian 1.1.2.2 * to throw. Should be a subclass of
26 cananian 1.1.2.2 * <code>java.lang.Throwable</code>.
27 cananian 1.1.2.2 */
28 cananian 1.1.2.4 public THROW(QuadFactory qf, HCodeElement source, Temp throwable) {
29 cananian 1.1.2.4 super(qf, source, 1, 1 /* one successor, the footer node. */);
30 cananian 1.1.2.1 this.throwable = throwable;
31 cananian 1.3.2.1 assert throwable!=null;
32 cananian 1.1.2.1 }
33 cananian 1.1.2.2 /** Returns the <code>Temp</code> containing the exception object to
34 cananian 1.1.2.2 * throw. */
35 cananian 1.1.2.2 public Temp throwable() { return throwable; }
36 cananian 1.1.2.1
37 cananian 1.1.2.1 /** Returns all the Temps used by this Quad.
38 cananian 1.1.2.1 * @return the <code>throwable</code> field. */
39 cananian 1.1.2.1 public Temp[] use() { return new Temp[] { throwable }; }
40 cananian 1.1.2.1
41 cananian 1.1.2.3 public int kind() { return QuadKind.THROW; }
42 cananian 1.1.2.3
43 cananian 1.1.2.6 public Quad rename(QuadFactory qqf, TempMap defMap, TempMap useMap) {
44 cananian 1.1.2.6 return new THROW(qqf, this, map(useMap, throwable));
45 cananian 1.1.2.3 }
46 cananian 1.1.2.6 /** Rename all used variables in this Quad according to a mapping.
47 cananian 1.1.2.6 * @deprecated does not preserve immutability. */
48 cananian 1.1.2.3 void renameUses(TempMap tm) {
49 cananian 1.1.2.1 throwable = tm.tempMap(throwable);
50 cananian 1.1.2.1 }
51 cananian 1.1.2.6 /** Rename all defined variables in this Quad according to a mapping.
52 cananian 1.1.2.6 * @deprecated does not preserve immutability. */
53 cananian 1.1.2.3 void renameDefs(TempMap tm) {
54 cananian 1.1.2.1 }
55 cananian 1.1.2.1
56 cananian 1.1.2.8 public void accept(QuadVisitor v) { v.visit(this); }
57 cananian 1.5 public <T> T accept(QuadValueVisitor<T> v) { return v.visit(this); }
58 cananian 1.1.2.1
59 cananian 1.1.2.1 /** Returns human-readable representation of this Quad. */
60 cananian 1.1.2.1 public String toString() {
61 cananian 1.1.2.1 return "THROW " + throwable;
62 cananian 1.1.2.1 }
63 cananian 1.2 }